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Preparation method and application of polypyrrole@ZIF-8/graphene nanocomposite

A technology of nanocomposite materials and polypyrrole, which is applied in the analysis of materials, material analysis by electromagnetic means, instruments, etc., can solve the problems of poor conductivity of pure ZIF-8, achieve good anti-interference ability, low detection limit, and improve The effect of electrochemical properties

Active Publication Date: 2021-03-30
QUFU NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the performance of pure ZIF-8 may be negatively affected by its poor conductivity

Method used

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  • Preparation method and application of polypyrrole@ZIF-8/graphene nanocomposite
  • Preparation method and application of polypyrrole@ZIF-8/graphene nanocomposite
  • Preparation method and application of polypyrrole@ZIF-8/graphene nanocomposite

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Experimental program
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Embodiment 1

[0030] (1) 12 mL of the graphene (GO) aqueous solution (concentration of 1.8 mg / mL) was mixed with 1.2 mL of pyrrole (PY) for 14 minutes to prepare a mixed liquid, and then the FECL was stirred rapidly. 3 · 6h 2 The aqueous solution of O (concentration is 4.1 mol / L) is mixed with the above mixture to rapidly form polypyrrole / oxide oxide (PPY / GO) hydrogel, transfer PPY / GO to 50 ml of Teflon liner. The conditions of the hydrothermal reaction were performed, and the conditions were taken at 175 ° C for 11 hours, and after the reaction was cooled to room temperature, the unreacted monomer and FECL were removed with ethanol solution.3 Then, then lyophilized for 23 hours to give a polypyrrole / graphene gel (PPY / GAS) having a concentration of 3.0 mg / mL;

[0031] (2) PPY / GAS and 0.28 g of 56 mg step (1) will be 56 mg (NO) 3 ) · 6h 2 O at 18mlch 3 Mixed and ultrasonic treatment in OH 55 minutes of suspension, then, the above suspension was slowly added to 18 ml of CH conta...

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Abstract

The invention belongs to the technical field of nano new materials, and particularly relates to a preparation method and application of a polypyrrole@ZIF-8 / graphene nano composite material. During preparation, PPy is used as a bridge between GAs and ZIF-8 for reinforced bonding, the PPy@ZIF-8 / GAs composite material is successfully synthesized through an in-situ growth method. The catalytic activity of the system exceeds that of a single-component system, and the electrochemical characteristics of the nano material are improved. The PPy@ZIF-8 / GAs nano composite material is successfully synthesized, the prepared composite material is applied to an electrochemical biosensor for rapidly detecting Dcp, the detection stability on the Dcp is good, the anti-interference capability is good, the detection limit is low, and the lower detection limit is 16 pM.

Description

technical field [0001] The invention belongs to the technical field of new nanomaterials, and in particular relates to a preparation method and application of a polypyrrole@ZIF-8 / graphene nanocomposite material. Background technique [0002] Nowadays, the water environment pollution caused by industrial production has become a problem of increasing concern all over the world. Dcp (2,2-methylenebis(4-chlorophenol)), a typical chlorinated phenol, is a common and extremely harmful environmental phenol due to its high toxicity, carcinogenicity and persistence in the environment pollutants. It is widely used in pesticides, preservatives, veterinary drugs, chemical fertilizers and personal care formulations, causing serious health ailments such as itching, weakness, anemia and cancer). In view of this, Dcp analysis is essential to reduce its health risks to aquatic organisms and humans. Chromatography is by far the most commonly used method for Dcp detection. This method is ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L79/04C08L87/00C08K3/04C08G83/00C08G73/06G01N27/327
Inventor 渠凤丽孔维素李钦赵文志牛现康
Owner QUFU NORMAL UNIV
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